Examine source code of Serval Tracker Linker

{
  "manifest_version": 2,
  "name": "Serval Tracker Linker",
  "version": "6.0",
  "description": "Adds a link to Serval Tracker on Takealot product pages.",
  "author": "Eustacia Rajman",
  "homepage_url": "https://github.com/Dafterfly/Serval-Tracker-Extension",
  "content_scripts": [
    {
      "matches": [
        "*://*.takealot.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "48": "serval_favicon_48x48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c1caacad-93de-43b5-9b31-91a6315febec}"
    }
  }
}